The 6354DO features the Automatic Locking System (ALS) and is specifically made for use with red dot optic-equipped weapons.
Safariland 6354DO ALS Optic Tactical Holster for Glock 19/23 w/ Red Dot & Light
Safariland 6354DO ALS Optic Tactical Holster for Glock 19 - Milspec Retail
MIL-SPEC MONKEY
Alien Gear Rapid Force Level 3 Duty Holster for Sig P320 w/Light - Milspec Retail
OTDefense Safariland ALS Nub Mod - LionHeart Alliance
SAFARILAND 6354DO ALS Optic-Ready Tactical Holster (Model: GLOCK 17/22 / Black), Tactical Gear/Apparel, Holsters - Hard Shell - Airsoft Superstore
Tactical 6354DO Nylon Wrapped Holster Automatic Locking System 3 holed G17 G19 Glock Pistol With X300
SAFARILAND (SAFARILAND) 6354DO QLS 19 Fork, Tactical Holster, Right Hand, Multicam, Fits Glock 17 22 : Sports & Outdoors
SAFARILAND 6354DO ALS Optic-Ready Tactical Holster (Model: GLOCK 17/22 / Black), Tactical Gear/Apparel, Holsters - Hard Shell - Airsoft Superstore
The Portal” from Ghostmen Designs for light-bearing Safariland™ Holsters – True North Concepts